Notebook



Aug. 23, 192?o M. VOGEL NOTEBOOK Filed Aug. 20. 1926 w J 4 a m My 9 1w- 3 9 d fi r|Ll||| |||||||||||v ||||||ll n M/m m Patented Aug. 23, 1927.

UNITED STATES MAX VOGEL, OF FBANKFORT-ON-THE-MAIN, GERCMANY.

No'rnnoon Applicationfiled August 20, 1926, Serial No.

This invention relates to book covers of the type in which the leaves are removably held Within the cover by a C-shaped clamping spring embracing the back of the cover,

the clamping spring being slid on in a longitudinal direction and taken 01f in the same way.

In fitting clamps of this type the narrow slit edges of the clamp are liable to damage the back, which is of flexible material, such as leather, artificial leather, wax cloth, stifl linen or the like.

In order to avoid this disadvantage, the sides of the cover of the book, in accordance with the present invention, ,arc provided with strip-like layers or coatings which serve as a guide for the edges of the clamp. There may be used as the coatings strips of papier mach, .gummed to the sides of the cover, but preferably these coatings consist of metal strips which are much more durable. Such strips may also be secured by means of adhesive..

It is preferred, however, to attach the metal rails or strips closely to the covers by clamping means. For this purpose the rails are bent to hook shape at their ends and embrace the edges of the cover. Moreover,

clam the rails may be riveted to the covers and such rivets may be formed as part of the material of the rails themselves. In order that the clamp cannot beuwithdrawn laterally by force from the cover-a contingency which might arise due to ignorance of the method of removing the co ver-the rails or strips are formed with longitudinal corrugations in which the somewhat rounded longitudinal edges of the clamp are guided. These corrugations at their opposite sides, under the clamping action, are pressed into the resilient cover and, into the sheets held between the covers. The great advantage of this arrangement is that the sheets are better gripped, while the cover, and in consequence the book, may be opened out completely. I

The clamp must be highly resilient in order that it will retain its properties after long use. To overcome the tendency of the clamp to close, a considerable force is required, and 'the natural smoothness of the renders its slidable removal for openm more diflicult. A further characteristic o the invention, therefore, consists in this that the clamp is roughened, for exam- -ple, it is formed with a ribbed surface, par- 130,488, and in Germany November 11, 1925.

ticularly at the point where it is gripped b the fingers.

An embodiment of the invention is illustrfiteg. in the accompanying drawings, in w 10 4 Fig. 1 is a pers eetive view showing a clamp not complete y in position,

. Fig. 2 is a plan view, and

Fig. 3 shows the cover in open. position and empty.

Referring to the drawing, the cover of the book b consists as usual of flexible sides a,

a and a back (1 formed in one therewith, or subsequently attached thereto. To the cover are fitted corrugated metal rails 6 0 secured by means of hollow rivets 9 formed in the material of the rails and driven into the cover. In lieu of rivets or in addition thereto, the rails may be overturned at their pro ecting ends, sons to grip the edges of the cover as shown at i (see particularly Fig. 3).

The rails serve as guides for the usual clamp is. In order at least to render difficult the removal of the clamp in a transverse direction, the rails are formed with longitudinal grooves m, in which the .rounded edges k of the clamp k engage. Under the action of the clamp the corrugations we press into the sheets 6 and form edges about which the sheets may bend when the book is opened, so that the back can be opened fully, which is very desirable for inspection and for writing therein.

In order to permit of gripping the clamp in moving it into and out of position such clamp is roughened, e. g., is ribbed, at least where it is to be gripped by the fingers as indicated by n, Fig. 1.

I claim':

1. A note book comprising in combination with a. cover, a C-shaped clamping spring slidable longitudinally of and embracing the cover and adapted to hold the leaves within the book and longitudinally-extending guide rails on said cover for guiding said clamping spring, said guide rails being connected with the cover by overturning portions at their ends into contact with the edges of the cover.

2. A note book comprising in combination with a cover, a C-shaped clamping spring slidable longitudinally of and embracing the cover and adapted to hold the leaves within the book, and longitudinally-extending guide rails on said cover for guid ng said clamping spring, said guide :rails formed with rivetlike projections adapted to be passed through the sides of the cover.

3. A notebook comprising in combination with a cover, a C-shaped clamping spring slidable longitudinally o f-and embracing the cover and adapted to hold the leaves within the book, and longitudinally extending rails guiding said clamping spring on said cover, said guide rails formed with longitudinal grooves and said clamp formed with rounded edges engaging in said grooves.

4;. A note book comprising in combination with a cover, a C-shaped clamping spring slidable longitudinally of and embracing the cover and adapted to hold the leaves within the book, and;longitudinally-extending guide rails for guiding said clamping spring on said cover, said clamp formed with a roughened surface, substantially as and for the 20 purpose set forth.

In testimony whereof I have signed my name to this specification.

MAX VOGEL. 

